After pasting the ssl codes and saving it and then restarting the server, just check the fullchain.pem and privkey pem file using any notepad to check its content and see if it matches the code you pasted.
If not, then I guess something is going wrong with permissions level I believe.
Just let me know your results so that we can find out the reason for your issue.
If it is a bug you believe, you can post all the necessary details and findings here
The developers will look into it with the provided details and fix it if its indeed a bug.
And regarding your claim of less updates, then you are wrong… if you check github branch the latest commit was done 4 days back itself. Its regularly updated. You need to run upgrade command to have all the latest updated files.